The major aim of this study is to reduce the usage of chemical substances for plant protection in the Mongolian agricultural sector. There are many grasshopper species that are harmful to forest and pasture plants. Therefore isolating and of course determining local strains which can be used to specifically control harmful pests in Mongolia are the primary objectives of the study. Thus, this research work concentrated on isolating bioproducts from a local strain of an entomopathogenic fungi Metarhizium anisopliae in order to determine its biological activity. 3 variants of the bioproduct of Ma.Mn-G09/22 local strain were experimented with, compared with control and replicated in triplicates in Munh-Khairhan Sum of Tuv Aimag. Our study involved field trials which proved that the local strain, G0922 of M. anisopliae fungi can be effective against harmful grasshopper Eclipophleps bogdanovi sergtarb.